Robert is qualified as a barrister in Canada and as a solicitor-advocate in England and Wales. He advises and represents governments, international organisations and private clients on a wide range of contentious and non-contentious public international law and international dispute resolution issues, including international boundaries, transboundary resources and bilateral investment treaties. He regularly acts as co-agent, counsel and advocate before the International Court of Justice and ad hoc international arbitration tribunals, including under the Permanent Court of Arbitration, ICSID, ICC, SCC, LCIA, UNCITRAL, WTO and UNCLOS rules. He also regularly sits as an arbitrator on international tribunals, including ICSID, UNCITRAL, ICC, SCC and LCIA arbitrations.
Robert is a Visiting Professor of International Law at University College (UCL), University of London, and a Visiting Senior Lecturer at King's College, University of London, where he teaches the international law of foreign investment and the international law of boundary disputes. He is on the International Law Advisory Board of the British Institute of International and Comparative Law. He is a member of the ICC Latin American Arbitration Committee. He is on the Management Board of the Investment Treaty Forum. He is on the Expert Panel for States of UNCTAD's Programme on Dispute Settlement in International Trade, Investment and IP. He is a Legal Expert on the Energy Charter Secretariat's Legal Advisory Task Force.